I don't understand that why does spelling Afghanistan is such a big deal to people. I mean I really don't understand. I'm from Turkey so my native language is Turkish and we write this country as Afganistan so I only add an h after the g. What is the issue with English speakers? Does it sound strange to you?
For me hardest spelling ones are Liechtenstein(Lihtenştayn in Turkish), Kyrgyzstan (Kırgızistan yes we have ı without dot and capital İ with dot) and I don't know why but Mauritania(Moritanya).

Think you know the countries like the back of your hand? Try seeing if you can list them in reverse alphabetical order with my new quiz, Countries of the World Z-A: https://www.jetpunk.com/user-quizzes/284204/countries-of-the-world-z-a

America.... or United States of.... most countries are called Federal Republic of... Kingdom of... United Kingdom of.... Democratic Peoples something or other...add in the odd Principality/Duchy/Commonwealth of... its another ambiguous one, like in the B countries quiz with Burma-Myanmar, we all know what it is, and there's more than one name that's used in common language.
I tried this quiz and used the proper name Islamic Republic of Afghanistan... it didn't work. Also tried the "Countries beginning with I" using Islamic Republic of Afghanistan, its proper name. It didn't work.
In the "Countries Beginning with U" both United States and United Kingdom were good, but in the Countries Beginning with G", Great Britain didn't work.
We're all smart cookies on here, if one doesnt work, we see the quiz writer has used the other. It's fine. Worse things are happening in the World.

Incorrect. It is The United Kingdom of Great Britain & Northern Ireland. Northern Ireland is not a part of Great Britain, even if they did compete in Team GB in the Olympics.
Team GB (BOA) is the National Olympic Committee (NOC) for Great Britain and Northern Ireland.

@ divantilya Your comment is neither better nor more accurate, the continental name would be North America, which incidentally would encompass Antigua & Barbuda (amongst many others). Sophia458 is correct. Maybe more to the point, how did you get to level 40 thinking America was the name of a continent?

@ianb23ss Only American don't consider America as a continent, the entire rest of the world consider it as such:
See Wikipedia:
https://de.wikipedia.org/wiki/Amerika
https://it.wikipedia.org/wiki/America
https://fr.wikipedia.org/wiki/Amérique
https://pt.wikipedia.org/wiki/América